<template>
  <div>数字：{{num}}{</div>}
  <button @click="add">+1</button>
  <button @click="dec">-1</button>
</template>

<script>
export default {
    data(){
        return{
            num:1,
        }
    },
    methods:{
        add(){
            this.num++;
        },
        dec(){
            this.num--;
        }
        
    },
}
</script>

<style>

</style>